We did it last week with my own waves, 3 rooms on floor 2 first, then 20, then the rest at 1 a.m. One room showed Not for this device in wave 2, its controller was on a version older than the package’s lowest allowed one, so it got skipped. Vendor is flashing that one by hand. Fan bug gone everywhere else. Much less scary than I expected.
QoS 1 and a lot of patience.